Jongin lost his best friend in a planned suicide but he never knew how dreadful it was to continue living alone. The worst memory Jongin took with him was that he never knew the exact reason why Taemin wanted to die so  badly - not until he then discovered Taemin's box which contained letters, probably explaining the real reason of his suicide. 

What happened when two schoolmates visited their past. ;X; NCT 127 LEE TAEYONG X

      For those who  are bounded 

  You are my sunshine, my only sunshine

Luhan had always wanted to fall in love, so much that he was willing to stalk his new neighbor constantly because he liked her